Improvement in book-binding



AQHOLBRQQK. Jr. BOOKBINDING.

No. 79,123. Patented June 23, 1868.

Witnesses ,xrw a I w )M 6 f L g .Zfwezziar:

Letters Patent No. 79,123, dated June 23, 1868.

mrsovsnsur In BOOK-BINDING.

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TO ALL WHOM IT MAY CONCERN:-

Be it known that I, Amos HOLBROOK, Jr., of'Lynn, in the county of Essex, and State of l\1assachusetts, have invented certain new and useful Improvements in the Met-bod of Sewing Books; and I do? hereby'declare that the following. is a full and exact description thereof, reference being bad to the accompanying drawings, andto the letters of reference marked thereon.

To enable others skilled in the art to make and use uiy invention, I Will proceed to describe its nature and construction.

The nature of my invention consists in a novel arrangcmentof the thread used for connecting the dificrent signatures of a book in the process of binding; the object of said arrangement being to adapt the work to the operation of a book-sewing machine, the said arrangement beingthis': I unite the different signatures by pass. ing' a parallel thread within the fold of each signature, said thread passing from signature to signature at or near the end, these parallel threads heing connected at regular intervals by a single or double-chain stitch,

Drawings. I

Figure 1 is a perspective view of a book sowed by my improved method.

Figure 2 is a perspective view of three signatures united by .a parallel thread, which passes through the foldof one signature, thence through the slit at the end of the signature, through a corresponding slit in the end of the next one, theucc threugh the fold of this signature, and' so on. i

Figure 3 is a sketch showing the relative positions of the parallel threads, and of the threudswhichform the chain-stitch, for uniting these parallels. i

To sew a book by my process, I proceed as follows; The first signature to be served is brought into position for sewing, and the parallel thread H H"'H, &c., is passed through it, the thread entering the first signature at H, fig. 2 through the-slit S; thence it passes in the fold of the first signature to the slit Z at the opposite end of the same signature. Having passed through this slit, it passes overto the next signature, as represented by H into the slit Z of the second signature, through the fold of which it passes to the slit S. and thence, as represented by L, to the slit in the third signature, and soon.

While the above process is going on, a second one is also in progress; that is, as scenes the thread has passed through the length of one signature 0. number of chain-stitches, M N O I, are formed around that thread in the scarfs D,'C D, 820., fig. 1. When this operation is complete, the first operation continues, that is, the parallel thread is passed through the second signature. This is no sooncrcomplcted than a second series of chain-stitches is formed around it, which operation serves to bind thcparallel thread of'the first signature t h parallel thread of the second signature. v I

This twofold process is continued until all the signatures are united.

If desirable, the chain stitches may be formed through a strong tape, which would serve to give additional stren'gtlr'to the book, and also serves to unite the covers to the book, or a strong twine may be substituted.

It will be seen from the above that my method of sewing-differs from those in common use in two essential particulars: first, in passing a parallel thread through the foldin a signature from end to end, then passing it through .a slit at this end to the next signature, and' so on; second, in uniting these parallel threads by the chain-stitch formed in the scarfs, as above described.

What I claim as ,my invention, is 1. Connecting two or more signatures of a bookby a parallel thread passing within the fold of each signature, and through the slit in the end, to the next signature. substantially as described and for he purpose set forth.

2. Combining with the parallel thread, arranged asset forth in the first claim, Series of chain-stitches, substantially as, described and for the purpose set forth.- a AMOS HOLBROOK', JR.

Witnessesz.

A. Him Bnnnr, FRANK G. PARKER. 

